949216685 has 24 divisors (see below), whose sum is σ = 1183129416. Its totient is φ = 731001600.

The previous prime is 949216657. The next prime is 949216717. The reversal of 949216685 is 586612949.

It can be written as a sum of positive squares in 12 ways, for example, as 323316361 + 625900324 = 17981^2 + 25018^2 .

It is a de Polignac number, because none of the positive numbers 2^k-949216685 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 690659 + ... + 692031.

It is an arithmetic number, because the mean of its divisors is an integer number (49297059).

Almost surely, 2^949216685 is an apocalyptic number.

It is an amenable number.

949216685 is a deficient number, since it is larger than the sum of its proper divisors (233912731).

949216685 is a wasteful number, since it uses less digits than its factorization.

949216685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553 (or 1516 counting only the distinct ones).

The product of its digits is 933120, while the sum is 50.

The square root of 949216685 is about 30809.3603471413. The cubic root of 949216685 is about 982.7773101587. Note that the first 3 decimals are identical.

The spelling of 949216685 in words is "nine hundred forty-nine million, two hundred sixteen thousand, six hundred eighty-five".